Given the root of a binary tree, return the level order traversal of its nodes' values.

ReadAdd two integers without using Arithmetic Operators.

ReadGiven an array containing n distinct integers in the range [0, n], one number is missing from the array. Find the missing number.

ReadGiven an array of integers, check if the array contains any duplicates.

ReadGiven root of a binary tree, check if it is balanced or not.

ReadGiven a binary string, count no of substrings with only 1's.

ReadGiven two integers count the number of positions where there bit representation differ.

Read